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Luna 9 photographs: Evidence for a fragmental surface layer

D. E. Gault·W.L. Quaide·V.R. Oberbeck·H. J. Moore
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Abstract

The morphological features of the lunar surface photographed by Luna 9 indicate a surficial layer of weakly cohesive to noncohesive fragmental material. Most of this material is finer than a centimeter and probably finer than a few millimeters, although objects of centimeter size and larger are plentiful.

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D. E. Gault, W.L. Quaide, V.R. Oberbeck, H. J. Moore. 1966. Luna 9 photographs: Evidence for a fragmental surface layer. https://doi.org/10.1126/science.153.3739.985

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